This pattern is from the book Blueprint Crochet which is available in print and eBook form. It is also available as a single pattern download from the Interweave Store.

Yarn: Fingering-weight (#1 Super Fine)
Shown: Blue Sky Alpaca Royal (100% Alpaca; 288 yd 263.5 m/ 3.5 oz. 100 g): #702 spanish leather, 4 (4, 5, 6) hanks.
Hook: US F/5 (3.75 mm) or hook size needed to obtain gauge
Notions: Tapestry needle; straight pins and spray bottle for blocking.
Gauge: 24 sts (2 SR) by 12 rows (6 RR) = 4 x 4¼“ (10 cm x 11 cm) in Fairy Wing Stitch Pattern, 20 sts = 4” (10 cm) in ribbing patt.
Size: Small (Medium, Large, X-Large) fits 32 (36, 40, 44)” (81.5 91.5, 101.5, 112 cm) bust circumference. Top shown in size Small.